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I heard part of Terry Gross' interview with Charles Mann on "Fresh Air" the other day. I learned so much in 15 minutes!

* No domesticated animals (including horses) lived in North America until Columbus and other Europeans arrived.
* Likewise, earthworms were nonexistent on this continent. I was pleased to find out that some forests in Minnesota are still free from earthworm damage and scientists are working hard to protect that habitat before it is irrevocably changed by earthworms.
* Europeans not only brought disease to this continent, but also wreaked environmental havoc.

I probably will get this book, hopefully soon.